<xsl:template match='vakken' >
   \renewcommand{\arraystretch}{1.3}
   <xsl:apply-templates select='fr' />
   <xsl:apply-templates select='en' />
   <xsl:apply-templates select='du' />
   <xsl:apply-templates select='ne' />
   <xsl:apply-templates select='la' />
   <xsl:apply-templates select='gr' />
   <xsl:apply-templates select='ec' />
   <xsl:apply-templates select='bi' />
   <xsl:apply-templates select='wi' />
</xsl:template>
